Maihueniopsis bonnieae
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Maihueniopsis bonnieae |
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| ( DJ Ferguson & R. Kiesling ) EFAnderson |
Maihueniopsis bonnieae is a species of the genus Maihueniopsis from the cactus family(Cactaceae). The epithet of the species honors the explorer Bonnie Brunkow.
description
Maihueniopsis bonnieae grows as a small geophyte and reaches a diameter of up to 15 centimeters. The thick taproot is branched and has an inverted conical shape. The wrongly conical, spherical or cylindrical shoot segments are tightly fleshed and broadly fused at the base. As young shoots they are blue-green and later turn ash-gray. The segments are 1.2 to 2.5 centimeters in diameter and are occupied with low, flat humps separated by furrows. The small and circular areoles have 9 to 20 close-fitting thorns . They are radiating and more or less pink to dark in color. Later the thorns turn white or gray. They reach a length of 0.1 to 0.4 centimeters.
The pinkish white to light pink colored flowers reach a diameter of 3 to 4 centimeters. The pericarpel has only a few areoles and is either bare or has a few bristle-like thorns on the upper edge, which are up to 0.3 centimeters long. The top-shaped to broadly obovate fruits are thin-walled, soft-fleshed and drying up. They become 1 to 1.5 centimeters long.
Distribution, systematics and endangerment
Maihueniopsis bonnieae is widespread in northern Argentina in the province of Catamarca and there in the department Tinogasta on dry gravel slopes and plains at altitudes of 2000 to 2500 meters.
It was first described as Puna bonnieae in 1997 by David J. Ferguson and Roberto Kiesling. Edward Frederick Anderson put the species in the genus Maihueniopsis in 1999 .
Due to the difficulties in the generic system, various recombinations have been made with this species in the past. The following terms are used as additional synonyms :
- Opuntia bonnieae (DJFerguson & R.Kiesling) Halda & Janeba (1999)
- Tephrocactus bonnieae (DJFerguson & R.Kiesling) Stuppy (2001)
Maihueniopsis bonnieae was in the Red List of Threatened Species of IUCN in 2002 as " Endangered (EN) , d". H. classified as threatened. When the list was revised in 2013, the classification was retained. The range of the species covers only about 20 km² with five known locations. In addition, the number of plants capable of reproduction is reduced by the collection. The development of the population is seen as decreasing.
proof
literature
- Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 361-362 .
Individual evidence
- ↑ Puna Bonnieae . Sue Haffner, Fresno Cactus and Succulent Society (online, PDF) ( Memento of the original from June 19, 2015 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. .
- ↑ D. J Ferguson, R. Kiesling: Puna bonnieae (Cactaceae), a new species from Argentina . In: Cactus and Succulent Journal . Volume 69, Number 6, Cactus and Succulent Society of America, 1997, pp. 287-293.
- ^ Edward F. Anderson: Some nomenclatural changes in the Cactaceae, subfamily Opuntioideae . In: Cactus and Succulent Journal . Volume 71, Number 6, Cactus and Succulent Society of America, 1999, p. 325.
- ↑ Tephrocactus bonnieae in the IUCN Red List of Threatened Species 2014.3. Posted by: Demaio, P., Kiesling, R., Trevisson, M. & Perea, M., 2013. Retrieved January 17, 2015.
